ul,h2,body{
    margin: 0;
    padding: 0;
}
li{
    list-style: none;
}
a{
    text-decoration: none;
    color: #333;
}
.wrapper{
    width: 1240px;
    margin: 0 auto;
}
.clearfix::before,
.clearfix::after {
    content: "";
    display: table;
}
.clearfix::after {
    clear: both;
}